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Articles 1 - 6 of 6
Full-Text Articles in Physical Sciences and Mathematics
Complete Genome Sequences Of Chop, Delrio, And Grandslam, Three Gordonia Phages Isolated From Soil In Central Arkansas, Heidi N. Mathes, Elijah I. Christenson, John H. Crum, Emme M. Edmondson, Kassidy E. Gray, Luke W. Lawson, Lauren E. Lee, Michael P. Lee, Jackson A. Lipscomb, Morgan E. Masengale, Hannah G. Matthews, Charles M. Mcclain 4th, Tuesday N. Melton, Trace H. Morrow, Alexis M. Perry, David R. Rainwater, Grace E. Renois, Maryann F. Rettig, Duncan C. Troup, Allie J. Wilson, Nathan Reyna, Ruth Plymale
Complete Genome Sequences Of Chop, Delrio, And Grandslam, Three Gordonia Phages Isolated From Soil In Central Arkansas, Heidi N. Mathes, Elijah I. Christenson, John H. Crum, Emme M. Edmondson, Kassidy E. Gray, Luke W. Lawson, Lauren E. Lee, Michael P. Lee, Jackson A. Lipscomb, Morgan E. Masengale, Hannah G. Matthews, Charles M. Mcclain 4th, Tuesday N. Melton, Trace H. Morrow, Alexis M. Perry, David R. Rainwater, Grace E. Renois, Maryann F. Rettig, Duncan C. Troup, Allie J. Wilson, Nathan Reyna, Ruth Plymale
Articles
Chop, DelRio, and GrandSlam are phage with a Siphoviridae morphotype isolated from soil in Arkansas using the host Gordonia terrae 3612. All three are temperate, and their genomes share at least 96% nucleotide identity. These phage are assigned to cluster DI based on gene content similarity to other sequenced actinobacteriophage.
A Geological History Of Clark County, Arkansas, Joe Jeffers
A Geological History Of Clark County, Arkansas, Joe Jeffers
Articles
The geological history of Clark County is described ranging from 500 million years ago to the present. One-third of present-day Clark County is in the Ouachita Mountains, two-thirds is in the Coastal Plain. The formation of the Ouachita Mountains is described, as is the cretaceous formations that led to biological fossils. Historic mining of minerals is also discussed. For the more technically inclined, a detailed description of the geological formations of the county is included near the end.
Slow Plastic Creep Of 2d Dusty Plasma Solids, Angela Douglass, Peter Hartmann, Aniko Zs. Kovacs, Jorge C. Reyes, Lorin S. Matthews, Truell W. Hyde
Slow Plastic Creep Of 2d Dusty Plasma Solids, Angela Douglass, Peter Hartmann, Aniko Zs. Kovacs, Jorge C. Reyes, Lorin S. Matthews, Truell W. Hyde
Articles
We report complex plasma experiments, assisted by numerical simulations, providing an alternative qualitative link between the macroscopic response of polycrystalline solid matter to small shearing forces and the possible underlying microscopic processes. In the stationary creep regime we have determined the exponents of the shear rate dependence of the shear stress and defect density. We show that the formation and rapid glide motion of dislocation pairs in the lattice are dominant processes.
Determination Of The Levitation Limits Of Dust Particles Within The Sheath In Complex Plasma Experiments, Angela Douglass, Victor Land, Ke Qiao, Lorin Matthews, Truell Hyde
Determination Of The Levitation Limits Of Dust Particles Within The Sheath In Complex Plasma Experiments, Angela Douglass, Victor Land, Ke Qiao, Lorin Matthews, Truell Hyde
Articles
Experiments are performed in which dust particles are levitated at varying heights above the powered electrode in a radio frequency plasma discharge by changing the discharge power. The trajectories of particles dropped from the top of the discharge chamber are used to reconstruct the vertical electric force acting on the particles. The resulting data, together with the results from a self-consistent fluid model, are used to determine the lower levitation limit for dust particles in the discharge and the approximate height above the lower electrode where quasineutrality is attained, locating the sheath edge. These results are then compared with current …
Dust Particle Charge In Plasma With Ion Flow And Electron Depletion Near Plasma Boundaries, Angela Douglass
Dust Particle Charge In Plasma With Ion Flow And Electron Depletion Near Plasma Boundaries, Angela Douglass
Articles
The charge on micrometer-sized dust particles suspended in plasma above the powered electrode of radio-frequency discharges is studied. Using a self-consistent fluid model, the plasma profiles above the electrode are calculated and the electron depletion towards the electrode, as well as the increasing flow speed of ions toward the electrode are considered in the calculation of the dust particle floating potential. The results are compared with those reported in literature and the importance of the spatial dust charge variation is investigated.
Crystallization Dynamics Of A Single Layer Complex Plasma, Angela Douglass, Peter Hartmann, Jorge C. Reyes, Lorin S. Matthews, Truell W. Hyde, Aniko Kovacs, Zoltan Donko
Crystallization Dynamics Of A Single Layer Complex Plasma, Angela Douglass, Peter Hartmann, Jorge C. Reyes, Lorin S. Matthews, Truell W. Hyde, Aniko Kovacs, Zoltan Donko
Articles
We report a series of complex (dusty) plasma experiments, aimed at the study of the detailed time evolution of the recrystallization process followinga rapid quench of a two-dimensional dust liquid. The experiments were accompanied by large-scale (million-particle) molecular dynamicssimulations, assuming Yukawa-type interparticle interaction. Both experiment and simulation show a ∝t(α) (power-law) dependence of the linear crystallite domain size as measured by the bond-order correlation length, translational correlation length, dislocation (defect) density, and adirect size measurement algorithm. The results show two stages of order formation. On short time scales, individual particle motion dominates; this is afast process …